Sluice gate



oct. 5, 1926. 1,602,111

F. JERMAR SILUI CE GATE Eiled March' 26 1925 Patented Oct. 5, 1926.

UNI-TED STATES yPATENT OFFICE.

' sLUIoE Garn.

Application mea March 26, 1925, serial No. 18,532, and in Czechoslovakia may s, 1924.

This invention relates to a hydrostatic device for regulating the flow of water over a eir, and consists in the provision of a water retainin flap which is hinged to the crest of a rigid weir and supported by-means of' 1 .a strut on another flap which moves in a reupper pool 11 at di cess in the weir so as to form said recess into a closed conduit, the flaps being arranged so that both are horizontal and vertically in valignment with each other Iin their lowest position and so that the supporting {iap re- Amains in all positions below the level ofthe crest of the weir.

The invention is illustrated in the accompanying drawing which represents a sectional view of the Weir.

4 Mounted on the crest of a rigid weir 8 is a Water retaining flap l which is hinged .ai 2 so that it can be adjusted in a vertical `plane for maintainin the water head in the erent levels' and revulating the flow of wateriover the weir. nother iap 4 is hinged to the weir 8 atv 3, `under thelap 1, and is connected tothe latter by means of\'a strut 6 which zis hinged at 5 and 7 respectively to thetwo flaps. The flap V4 also moves in a vertical plane within a recess made for it in the welr 8, the recess being formed with a curved surface which is concentric with the hinge 3? and'which isv swept by the liap so as to -form a closed conduit which expands and contracts with the movements of the Hap. When the flaps are in a horizontal position, as` shown by dotted lines, thevconduit is .reduced to -a narrow channel 9 which-can be set into communication either with the upper pool 11 or with the lower pool 10. The flap 1`is supported by means of the strut `6 on the YHap 4 andv changes its angular position together withL the latter. i

A channel 13 leading from/the upper pool lll', communicates withthechannel'Q and opens into the lower pool 10; Two sluice valves 14 and 15 are arranged in the channel 13 lat opposite' sides of its communication with the channel 9, allowing the l tter to be set into communication leither wit, the upper or the lower pool.

v.so as to move in a vertical When the conduit under the flap 4 is connected with the upper pool, the water pressure acts on the Hap and raises thefree ends of both flaps. A lip 12 on the Weir 8 limits the upward movement. To increase the flow of water over theweir, the conduitis connected to the lower pool 10 until t-he desired angular position of the retaining Hap is attained.

-The flaps are arranged' so as to be vertically in alignment with each other when in their -horizontal position.

small space. The flap 4, moreover, remains below the level of the crest of the weir in -all its positions, and it will therefore be acted upon with suiiicientA water pressure for raislng the flap `1 even from the lowermost osition without. auxiliary power sources. n a known arrangement wherein two flaps bear direct against each other, both are practically on a level with the water head in the lowest position and require auxiliary means for affecting theri'nitial adjusting movement.

It should be noted that there is no sliding connection between thelaps and that the supporting strut 6 is'not subjected to any water pressure, so that very little friction occurs in the mechanism. l The -strut 6.may either be composed of a continuous plate' or a plurality of bars.

I claim:

A sluice gate for weirs comprisin water retaining flap hinged to the crest o the Weir plane. a controlllng'flap hinged to the weir 1n a similar manner below the retaining flap, the weir being recessed so as to form a closed conduit tolgather with the controlling ap inall posi- TFRANTISEK JERMAR.

Thus the device has a contracted formand will occupy a very 

